Riesel primes of the form 211•2n-1

Current data

k , b : 211 , 2 Count : 21 Nash : 1039 Max n : 7,000,000 Date : 2024-04-23

1, 13, 23, 37, 43, 67, 83, 151, 661, 811, 3937, 5027, 5365, 9307, 11971, 60295, 89071, 89303, 262877, 680135, 842347

History

• 2024-04-23: Reservation dropped, Thomas Ritschel
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-06-22: Checked to n = 7000000, Thomas Ritschel
• 2019-12-17: Checked to n = 6000000, Thomas Ritschel
• 2019-09-28: Checked to n = 5000000, Thomas Ritschel
• 2018-06-18: Reserved by Thomas Ritschel, from n=2000000
• 2012-07-27: Checked to n = 2000000, Michael Curtis, released
• 2012-05-04: Checked to n = 1740000, Michael Curtis
• 2011-12-04: Checked to n = 1610000, Michael Curtis
• 2011-06-02: Checked to n = 1510000, Michael Curtis
• 2011-02-06: Checked to n = 1410000, Michael Curtis
• 2010-10-28: Checked to n = 1360000, Michael Curtis
• 2010-01-12: Checked to n = 1000000, Michael Curtis
• 2009-10-14: n~1000000, Michael Curtis
• 2009-09-01: Checked to n = 895000, Michael Curtis
• 2009-08-01: Found n = 842347, Dan Buzschwitz
• 2009-02-13: Checked to n = 800000, Michael Curtis
• 2008-07-14: Checked to n = 700000, Michael Curtis
• 2008-02-14: Reserved by Michael Curtis
• 2008-02-03: Checked to n = 690000, Borys Jaworski, released
• 2008-01-28: Found n = 680135, Borys Jaworski
• 2008-01-12: Checked to n = 650000, Borys Jaworski
• 2008-01-06: Checked to n = 640000, Borys Jaworski
• 2007-10-01: Reserved by Borys Jaworski
• 2006-12-16: Checked to n = 600000, RPS Drive 4, released
• 2006-07-31: Found n = 262877, Predrag Minovic, RPS Drive 4
• 2006-07-28: Reserved by RPS Drive 4, for n = 260000 - 600000
• 2004?: Checked to n = 250000, Mark Anderson, released
• 2004-06-04: Reserved by Mark Anderson, for n ≤ 250000